Rotary pump.



. J. RI KINNEY.

ROTARY PUMP.

A'PPLIOATION FILED AUG 17 1910 Patented May 30, 1911.

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J. R. KINNEY;

ROTARY PUMP.

APPLIUATION FILED AUG.17, 1910.

Patented May 30, 1911.

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' wa'imwet M7751 & mm (564% 6; W

JUSTIIS B; KINNEY, 015 BOSTON, MASSACHUSETTS.

7 Specification of Letters Patent. Application filed August 17, 1910. Serial No. 577,888.

Patented May 30, 1911.

To all whom it may concern.

Be it known that I, J USTUS R. KINNEY, a

citizen of the United States of America, and

of simple construction, the principal object being to reduce the number of operating pa.rts thereby obviating the liability of the pump becoming inoperative.

' The invention consists in certam novel features of construction and arrangement of I parts which will be readily understood by reference to the description of the drawings and to the claims hereinafter given.

. Of the drawings:'Figure 1 represents a vertical section of a pump embodying the features of the present invention, and Fig.

2 represents a transverse section of the same, the cutting plane being on line 2-2 on Fig. 1.

Similar characters designate like parts throughout the drawings. 1

In the drawings, 10 represents a casing having formed therein a cylindrical piston chamber 11, an inlet compartment 12 and an outlet compartment 13. The inlet compartment 12 communicates with the piston chamber llby means of the passage 14 and a similar passage 15 forms a means for communication between said piston chamber 11 and the outlet chamber 13. An inlet pipe 16 admits fluidfto the inlet compartment 12 and a similar pipe 17 communicating with the. outlet compartment 13 is adapted to take care of the fluid discharged from the piston chamber 11. Y

The casing 10- has secured to one end thereof an end plate 18' by means of screws 19, this end(plate18 and the casing each being provide with a bearing 20 for the revoluble shaft 21 having formed thereon a crank 22 positioned within the iston cham ber 11. An annular piston 23 18 positioned upon .said crank, said pistonbeing adapted in the rotation of the crank 22'torcontact at one point in its. periphery with the cylin-' dri'cal wall of the piston chamber. 11.

Theannular piston 23 is provided with a blade 24 radiating therefrom and extending into a closed chamber 25 formed in the easing 10 intermediate the inlet and outlet compartments 12 and 13. On either side of the blade 24 are positioned two semi-cylindrical members 26 and 27 each located in a cylindrical compartment in which they are adapted to oscillate about axes separated from each other, the axis. of oscillation of each of the members 26 and 27 being outside of the face of said radiating blade 24. Each of these oscillating members 26 and 2 7 is provided with surfaces adapted to contact with the outer face of the blade 24 and prevent any leakage of the material thereby. The member 27 has the face opposite the side of the radiating blade 24 curved to contact with said blade and accommodate itself to various positions thereof during the rotation of the crank 22.- This member 27 is also provided with a packing member 28 forced outwardly by means of a spring 29 into contact with the face of the blade 24. This packing provides a means for preventing the fluid in advance of'the piston from leaking by the blade 24 through the closed compartment 25 to the opposite side of said piston.

Inter osed between the member 26 and the bla e 24 is'anroller 30 which is adapted to-travel across the flat face of said member 26 to accommodate itself to various positions of the blade 24. In some cases attempts have been made in pumps of a similar construction having a radiating blade to provide an oscillating packing member on either side ofthe blade, these members moving about a common axis and each member consequently being less then a half cylinder. As a consequence when the wearing surfaces of these members have become worn they become wedgedand bind upon the blade in-su'ch a manner as to make the pump inoperative.

It has been found by experiment that these objections are wholly obviated when the bearing members are separatedas is indicated in Fig. 1 of the drawings and each of the'bearing members is made more than a half cylinden- It is quite obvious that under such conditions no wedging effect can be roduced to bind upon the blade 24 which is ree to oscillate and reciprocate between the members 26 and 27 which move freely jabout their arms to accommodate themselves to the various positions of said blade while at the samev time they keep in contact with the surfaces thereof to prevent leakage and in sure a proper action of the pump.

It is believed the operation and many advantages of the invention will be fully apparent without any further description.

Having thus described my invention,

contacting therewith, adapted to oscillate about separate axes.

"2. In a device of the class described, the combination with a casing having a cylindrical piston chamber and an inlet and outlet passage communicating therewith; of a crank revoluble within said piston chamber; an annular piston thereon adapted to contact at one point in its periphery with the cylindrical wall of said chamber during'the revolution of said crank; a blade radiating from said piston and extending into a closed chamber in said casing intermediate said inlet and outlet passages; semi-cylindrical members in either side of said blade, and contacting therewith, adapted to ,oscillate about separate axes; and a roller interposed between one of said members and oneface of said blade.

3. In a device of the class described, the combinationwith a casing having a cylindrical piston chamber and afn inlet and outlet passage communicating therewith; of a crank revoluble within said piston chamber; an annular piston thereon adapted to contact at one point in its periphery with the cylindrical wall of said chamber during the revolution of said crank; a blade radiating from said piston and extending into a closed chamber in said casing intermediate said inlet and outlet passages; semicylindrical members in either side of said blade, and

contacting therewith, adapted to oscillate about separate axes; and a packing carried by one of said members and contacting with one face of said, blade.

-1. In a device of the class described, the

combination with a casing having a cylindrical piston chamber and an inlet and outlet passage communicating therewith; of a crank revoluble within said piston chamber;

an annular piston thereon adapted to contact at one point in its periphery with the cylindrical wall of said chamber during the revolution of said crank; a blade radiating from said piston and extending into a closed chamber in said casing intermediate said inlet and outlet passages; semi-cylindrical members in'either side of said blade, and contacting therewith, adapted to oscillate about separate axes; and an outwardly pressed packing carried by one of said meln- 7 0 bers and contacting with one face of said blade.

5. In a device of the class described, the combination with a casing having a cylindrical piston chamber and an inlet and ontlet passage communicating therewith; of a crank revoluble within said piston chamber an annular piston thereon adapted to contact at one point in its periphery with the cylindrical wall'of said chamber during the revolution of said crank; a blade radiating from said piston and extending into a closed chamber in said casing intermediate said inlet and outlet passages; semi-cylindrical members in .-either side of said blade, and 1 contacting therewith, adapted to oscillate about separate axes; 'a roller interposed between one of said members and one face of said blade; and a packing carried by one of said members and contacting with one face: i of said blade. i

. Signed by me at 4 Post Oflice Sq., Boston, Mass'., this 29th day of July 1910 J USTUS R. KINNEY.

Witnesses:

WALTER E. LOMBARD, EDNA C. CLEVELAND. 

